Muffler cut-out



Oct. 30, 1923. Y

W. H. CRYAN MUFFLER CUT-OUT Filed March 5, 1921 [IL I INVENTOR,

' yL JA I ATTORNEYS Patented Oct. 30, 1923.

Moan? PATENT WILLIAM: H. CRYAN, OF WOONSOCKET, RHODE ISLAND, ASSIGNOR OF OLlE-I-I.. LF TO GEORGE E. VERHULST, QNE-SIXTH TO ROMEO J. DANIS, ONE-SIXTH TO WILLIAM F. FOX, AND ONE-SIXTH TO HAROLD B. FINDLAY, ALL OF WOONSOCKEI', RHODE ISLAND.

IJIUFFLER CUT-OUT;

Application filed March 5, 1921. Serial No. 449,628.

To all whom it may concern Be it known that 1, WILLIAM H. CRYAN, a citizen of the United States, residing at lVoonsocket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Muffler Cut-Outs, of which the following is a specification.

This invention relates to muflier cut-outs for internal combustion engines and pertains particularly to cut outs providing a straight away discharge of exhaust gases through the cut out to the open air.

One object of the invention is to provide a muffler cut out in which there maybe no obstructions in the path of exhaust gases when the cut out is open. 7

Another object of the invention is to provide a cut out in which the valve when opened to the cut out position is entirely removed from the path of the gases into an offset position.

Another object of the invention is to provide for perfect seating of the valve, so as to completely close the exhaust passage to the open air when the mufiler is in use, and likewise completely close the muffler connection when the cut out is open.

Another object of the invention is to provide a muffler cut out in which the valve and control handle may be removed and reversed with respect to the body of the cutout.

.One feature of the invention relates to the peculiar configuration of the parts and their combination with the peculiar mounting of the valve. These features include details providing for machine facing of certain parts which serve in a dual relation as clamping surfaces and as valve seats.

Another feature of the invention relates to the mounting of a bracket on one of the normally hold the valve in closed position so as to divert exhaust gases into the muffler. This feature includes the removable nature of the bracket and the removable feature of the valve and lever arm therefor as a unit sition of parts.

Another feature of the invention includes the three part construction of the cut out,

. air and cool the cut out each part having the. laterally extending flanges which serve not only as fastening flanges and valveseats, but also as air cooling flanges which serve to catch the rush of and the valve therein.

These and other details and advantagesof the device are described and claimed in the following specification and claims, and illustrated in the accompanaying drawing, in which:

Figure 1 represents a side view of the cut out mounted in conjunction with the exhaust pipe and muflier pipe of an automobile enginey Figure 2 is a vertical sectional view taken lengthwise of the cut out and looking at the interior thereof;

Figure 3 isa top planview of the complete cut out; and 1 Figure 4 is a top plan view looking down on the. lower member in its removed position, and showing the flat faceof the flange thereof.

Referring in detail to the drawing, like reference numerals refer to like parts in the various figures.

1 indicates the exhaust pipe leading from an automobile engine. 2 is a muflier pipe leading from a cut out embodying the present inventionfto a suitable mufiler 3. The cut out is formed of three main parts and a valve, as will be described. The first part 4 has an upper end adapted to receive the adjacent end of the exhaust pipe .1. This upper end is split along its upper. surface and adapted to lamp the exhaust pipe 1 by means of the lugs 5 whichare designed to be drawntogether by suitable fastening means-0r bolt 6. The lower face of the part 4'is' flat and formed by a'machine faced flange surface 4" which is adapted to receive a corresponding flange face. on the lower part. The side of the member 4 is likewise provided with a flange which is machine faced to receive a ,corresponding'flangeface of a second part adapted to connect with the pipe 2 leading to the muflier; By re-' ferring to Figure 2, it will-be noted that this:

side face of the part 4 is indicated at 4" and is offset from the bore of the .pipe 4"by an extension wall 4, the purpose and functions of which will be explainedhereinafter.

The second part 7 of the cut out has an end adapted to clamp the muffler pipe 2 by means of the split end having lugs 8 which are adapted to be drawn together by abolt 9. The opposite end of the member 7 has a broad flange machine faced surface 7 to the adjacent face a by means? represented as bolts or screws threaded into the wall 4. The bore of the member 7 "adja cent the member 4 is somewhat less than the bore of the opening formed by the extension walls 4 and therefore, the inwardly extendi'ng flat machine faced portion of the flange indicated at 7*" serves as a seat for a fia'tflap va-lve,as will'be described.

A third chief part 10 provides an outlet pipe leading directly to theatmosp'here and the bore of which is in alinement with the bore of the part 4;. The third part 10 has an outwardlyextending flange portion having a machine faced upper surface 10 adapted tobe secured to the adjacent under face 4: of the part at by means of screws or bolts 10. An inwardlyextending portion of the flange face is indicated at 10 and corresponds to-the'face 7 and thus serves asal g lower valveseat as will be described. 7 A

The control valve is" formedof flat valve mounted as a flap valve 11 having a round pivot pin 12 rigidly secured thereto. The pin 12'serving as the mounting for thevalve 11, is seated in a groove 13' formed'in the ad jacent faces of the parts; 7 and 10 and extreme end of the part a. The exact construction is provided by the relation of the flange faces of the three parts which lie in intersecting planes meeting at the extreme end of the'part l. Thus a grooveis formed in the ends of the two side projections of the part l, cutting away a" portionbf the flange surface 4 and F; likewise a corre-' sponding groove is formed in the'fl'ange sur face 7 of the part 7 and a similar groove in the upper surface of the part 10 and 1n the face of the flange; surface 10 Thus the valve 11 maybe moved to either the valve seat 7 or to'the valve seat 10 and make a tight fit bv having the valve thus constantly parallel to these respective seats when in' either closed positionl It will be seen that the valve should be placed in position when the parts are assembled. Suitable washers 1.2 and cotter pins 12 areprovided to limit the endwise movement of the pin 12' and maintain the central positit'on of the valve 11. The'dotted line X in Figure 4 represents the normal position of the edgejof the valve 11 when resting on the lower valve seat 10". and the dotted lineY in Figure3 indicates the normal'positionpf the edgeof the valve 11' when it rests'on the valv'es'eat'7 and the cut out is wide open;

illustrated as" anextension of thepi r 12,

, 7 adapted to be secured near its outer edgethefiange 10 by. the fastening screws 10 or other suitable means. T he bracket 15 base downwardly extending main portion,

which latter has an outwardly extending shelf at its lower end indicated at 15, and.

which 'in turn is provided with a central opening 15 A spring 16 extends from the opening 15 toa convenient point of attachment 14? along the'lever let. Likewise a cable' 17 is" secured to the lever 14 at any other of, the points l l and is connected to an operating pedal l8.located in the automobile Operation of the foot pedal 18 serves to move the valve 11 to position against one or the other of the valve seats 7 or 10 When the pedal 18 is released the spring 16 draws the lever farm 14L downward bringing the valve 11' to rest on the seat 10*, completely closing the cut out and diverting all of the exhaust gases laterally through the mulilcr outlet member 7. In this position the haust gases enter the part a and into the ca larged'interior thereof, thus slowing up the speed' of, the gasespriOr to their discharge into the muffler. The impact of the exhaust gases on the upper face of the valve 11 also serves to slow up the exhaust gases. .Vhen pressure is applied to the pedal 18 the lever l.'-l is moved upward and the valve 11 brought to its wideopen position against the valve seat 7 and completely out of the path of the exhaust gases as they enter through the part 4. There is no possible chance for the exhaust gases to strike the end or edge of the'valve 11 for-the reason that the sin tensionl. provides a very substantial recess. it will be noted that the lower end of the valve 11 when in the wide open position, tliat'is its pivotal point at 13, is substantially at theedge of the surface of the lower pipe portionh), and conseqnuently the gases are led continuously through the member 4 and into: the pipe 10 without striking any obstrubtions at the point where the valve is pivoted. Therefore, when in the raised positionthe valve permits the discharge of eschaust in a straight line through the cut out "and direct to the open air without the possibility of meeting any obstructions whatsoever which might cause back pressurepsut-h'as might be caused by a valve in the discharge passage or any device for diverting the gases at an angle.

The mounting ofth'e valve 11 and the I 4 I p necessary cooperation of the valve with the The pivot'pin '12 is providedw'ith a lever 14 the construction shown the member 4 extends at an angle of 45 degrees and in this particulardesign has proved highly satisfactory.

The position of the flanges thus extending at an angle of 45 degrees tends to trap the air and to materially assist in cooling the cut out. This cooling feature is of considerable importance because the life of the device is in part dependent on the freedom from warping due to overheating. In many constructions the valve is located in the path of the gases when the cut out is open, but in the present structure the valve is located at one side and is also cooled by the air engaging the laterally extending flanges.

lVhat I claim is: 1

l. A cut out for internal combustion engines comprising a first separable part constituting the exhaust receiving member, a second separable part having an unobstructed passageway and constituting a muffler discharge member, a third separable part having a single straight opening therethrough and constituting a direct discharge to air member, a valve adapted to be moved to close off communication from said exhaust receiving member to either said second or said third separable parts for regulating the direction of discharge of exhaust gases, and means for holding said first, second, and third separable parts in fixed assembled relation.

2. A cut out for internal combustion engines comprising a first separable tubular part constituting the exhaust receiving memher. a second separable tubular part having unobstructed passageway and constituting a muffler discharge member, a third separable tubular part having a single straight opening therethrough and constituting a direct discharge to air member, a valve adapted to be moved to close off communication from said exhaust receiving member to either said second or said third separable parts for regulating the direction of discharge of exhaust gases, and means for holding said first second. and third separable parts in fixed assembled relation, the bore of said first and third part being in alinement, and the bore of said second part extending laterally from the bore of said first part.

3. A cut out for internal combustion engines comprising a first member constituting the exhaust receiving member having at one end an opening to communicate with the exhaust pipeof an engine and at the other endtwo substantially annular fiat flanges arranged in different planes, a second distinct part having at one end a pipe opening to communicate with a mufller and at the other end a flat seat adapted to fit one of said flanges on said first member, a third, mem-- her having at one end a pipe opening communicating with the atmosphere and at the opposite end a fiat seat adapted to fiton the other flange of said first member, means to secure said second and third members to said flanges on said first member, and a valve for regulating the direction of discharge of the exhaust gases.

4. A cut out for internal combustion engines comprising a first separable part 'con stitutingthe exhaust receiving member, a second separable part constituting a muiiler discharge member, a third separable part constituting a direct discharge to air member, means for holding said first, second and third separable parts in fixed assembled relation, and a pivoted flat valve mounted on a rocker shaft at the center pointof the juncture of said first, second and .third separable parts and adapted to regulate the direction of discharge of exhaust gases either directly and in a straight line through said third part or at an angle through said second part. p

5. .A cut out for internal combustion engines comprising a first member constituting theexhaust receiving member having at one end an opening to communicate with the exhaust pipe of an engine and at the other end two substantially annular flat flanges arranged in different planes, a second distinct part having at one end a pipe opening to communicate with a muffler and at the other end a flat seat adapted to fit one of said flanges on said first member, a third member having at one end a pipe opening communicating with the atmosphere and at the opposite end a flat seat adapted to fit on the other flange of said first member, means to secure said second and third members to said flanges on said first member, and a flat valve pivoted at the point of intersection of the planes of the flat faces of said first, second and third members.

6. A cut out for internal combustion engines comprising a first member constituting the exhaust receiving member having at one end an opening" to receive the exhaust pipe of an engine, and at the otherend two flat.

machine faced flanges arranged in different planes, a second distinct part having at one end a pipe opening adapted to communicate with a muffler and at the other end a flat machine faced flange adapted to fit on one of said flanges on said first member, a third member having at one end a pipe opening communicating with the atmosphere and at the opposite end a flat machine faced flange adapted to fit on the other fiangeof saidfirst member, means to secure said second and third members on the flanges of said first member, and a valve for regulating the discharge of the exhaust gases.

'7. A cut out for internal combustion engines comprising a first member constituting the exhaust receiving member having at one end an opening to communicate with the exhaust pipe of an engine and at the other end two substantially fiat machine faced flanges arranged in different planes, a second distinct part having at one end a pipe to communicate with a mul'ller and at the other end a flat machine faced seat adapted to fit one of said flanges on said first member, a third member having at one end a pipe opening communicating with the atmosphere and at the opposite end a fiat machine faced seat adapted to fit on the other flange of said first member, means to secure said second and third members to said flanges on said first member, and a fiat valve pivoted at the point of intersection of the planes of said face ofsaid flanges and the machine faced seats of said second and third members.

8. A cut out for internal combustion engines comprising first separable part constituting the exhaust receiving member, a second separable part constituting a muffler discharge member, athird separable part constituting a direct discharge to air memher, a fiat valve seat formed by the face of said second part next adjacent said first part, a fiat valve seat formed by the face of said third part next adjacent said first part, and a flat valve pivoted at one of its ends and with its free end towards said first pipe end and arranged to be moved to rest on either of said valve seats.

9. A cut out for internal combustion engines comprising a first member constituting the exhaust receiving member having at one end an opening to communicate with the exhaust pipe or" an engine and the other end two substantially annular fiat flanges arranged in diiferent planes, a second distinct part having at one end a pipe opening to communicate with a mufiler and at the other end a fiat scat adapted to fit on one of said fiat flanges on said first member and pro viding also a first flat valve seat, a third member having at one end a pipe opening communicating with the atmosphere and at the opposite end a flat seat adapted to fit on the other fiat flange on said first member and providing a second fiat valve seat. means to secure said second and third members to said flanges on said first. member, and a fiat valve pivoted at one of its ends and with its free end towards said first pipe end and ar ranged to seat on either said first or said second valve seats.

10. A cut out for internal combustion en gines comprising a first separable part constituting the exhaust receiving member, a second separable part constituting a mufiier discharge member, a third separable part constituting a direct discharge to air member, means for holding said first, second and third separable parts in fixed assembled relation, and a pivoted. fiat valve mounted on a rocker shaft the center point of the juncture of said first, second and third separable parts and adapted to regulate the direction of discharge of exhaust gases either directly and in astraight line through said third part or at an through said second part, the faces of said second and third parts next adjacent said first part extending inwardly and providing fiatseats for said valve.

11. A cut out "for internal combustion engines comprising first member constituting the exhaust receiving member having at one end an opening to communicate with the exhaust pipe of an engine and at the other end two substantially annular fiat flanges arranged in ditl'e'rent planes, a second distinct part having at one end a pipe opening to communicate ith a mufiier and at the other end a fiat seat adapted to fit one or said flanges on said first member and providing also a. first i at valve seat, a third member having at one end ,a pipe opening communicating with the atmosphere and at the opposite end a fiat seat adapted to fit on the other fiange of said first member and providing also a second fiat valve seat, means to secure sair second and third members to said flanges of said first member, and a flat valve pivoted at one of its ends and with its free end toward said first pipe end and arranged to seat on either said first or second valve seats.

12. A cutout for internal combustion engines comprising a first member constituting the exhaust receiving member having at one end an opening to receive the exhaust pipe of an engine, and at the other end two fiat machine faced flanges arrangeiil in different planes, a second distinct part having at one end pipe opening adapted to communicate with a. mufiler and at the other end a fiat machine faced flange adapted to fit on one of said flanges of said first member and extending inwardly to provide a first fiat valve a third member having at one end a pipe opening communicating with the atmosphere and at the opposite end a fiat machine faced flange adapted to fit on the other flange of said first men'iber and extending inwardly to provioe a second flat valve seat. means to secure the: flanges of said second and third members on the Flanges or Said first inen'iber, and a fiat v 'lve pivoted at one of its ends and with its free end toward said first pipe end and arranged to rest on either said first or second valve seats.

13. A cut out assemblage for" internal combustion engines comprising a first pipe member constituting the exhaust receiving member having at one end an opening adapted to communicate with an engine exhaust pipe, said first member being enlarged at the opposite ends toprovide a valve chamber, two flanges extending from said first pipe member and arranged in difierent planes cutting said valve chambers, a second part having at one end a pipe opening to communicate with the muifler and at the other end a flange adapted to rest on one of said flanges of said first member and having an inwardly extending flat flange portion constituting a valve seat, a third member having atone end a pipe opening communicating with the atmosphere and at the opposite end a flat flange adapted to rest on the other flange at said first member and having an inwardly extending flat fian e portion constituting a second valve seat, and a flat valve pivoted at the extreme end of said first member farthest removed from the exhaust receiving end and adapted to seat on said first or second inwardly extending flat flange valve seat.

14. A. cut out for internal combustion engines comprising a first separable part constituting the exhaust receiving member, a second separable part constituting a muffler discharge member, a third separable part constituting a. direct discharge to air member, means for holding said first, second and third separable parts in fixed assembled relation, a pivoted flat valve mounted on a rocker shaft at the center point or" the juncture of said first, second and third separable parts and adapted to regulate the direction of discharge of exhaust gases either direct-- ly and in a straight line through said third part or at an angle through said second part, and a lever for said valve projecting from said rocker shaft at an angle thereto,

said valve and lever being detachably removable as a unit when said first, second and third parts are unassembled and reversible with respect to said three parts to place said lever on the opposite side of said parts.

15. A cut out for internal combustion engines comprising a first separable part constituting the exhaust receiving chamber, a'

second separable part constituting a muiiler discharge member, a third separable part constituting a direct discharge to air member, means for holding said first, second and third separable parts in fixed assembled relation, a pivoted flat valve mounted on a rocker shalt at the center point of the juncture of said first, second and third separable parts and adapted to regulate the direction of discharge of exhaust gases either directly and in a straight line through said third part or at an angle through said second part, a lever for said valve projecting from said rocker shaft at an angle thereto, said valve and lever being detachably removable as a unit when said first, second and third parts are unassembled and reversible with respect to said three parts to place said lever on the opposite side of said parts, a lever for said valve having a series of attachment points thereon, a bracket member secured to said assemblage and having a portion extending downwardly and outwardly, and a spring secured to said bracket and to said lever and normally holding said lever down and said valve against said thirdmember and thereby diverting exhaust gases through said second member.

In testimony whereof I affix my signature.

WILLIAM H. GRYAN. 

